Plumbing unit for a vent and waste plumbing system



Oct. 4, 1955 c. E. cHoATE PLUMBING UNIT FOR A VENT AND WASTE PLUMBING SYSTEM Filed NOV. 3, 1952 IN V EN TOR.

CHQ/SWAN Ef LTL/0,475,

m. am 5 United States Patent O PLUMBING UNIT FOR A VENT AND WASTE PLUMBING SYSTEM Christian E. Choate, West Los Angeles, Calif., assigner of one-half to Clil May, Los Angeles, Calif.

This invention relates to a prefabricated plumbing drainage and venting unit and more particularly to a combination dual manifolded vent and waste drainage unit for providing a simplified connection between soil pipe of a plumbing system and drain pipes leading from a plurality of plumbing xtures of said system.

lt is customary plumbing practice to provide a waste drain pipe for each plumbing fixture for ow of waste from said fixture to a soil pipe line. Each waste pipe is usually vented adjacent to the plumbing fixture by means `of an upstanding vent pipe which may lead to either a separate vent stack or to a combined vent and soil stack. Prior customary practice to provide vent and waste pipes for such a plumbing system has been to measure, cut and thread the various pipes on the job site for each installation. Each installation was separately planned, each was differently arranged, and each required different pipe lengths, etc. Many joints were made to fabricate the prior customary type of plumbing system and careful workmanship was demanded of the plumber. In order to make the necessary pipe runs, the plumber often cut into or through studs, joists and other framing which tended to weaken the building framing construction. Because of the size of the vent pipe required in prior plumbing installations, a standard wall thickness (that is, using 2 x 4 studs) was not deep enough to hide or cover these pipes and the wall thickness adjacent to such pipe runs was increased beyond standard wall thickness. Such increase in wall thickness required careful planning in order to avoid unattractiveness.

This invention contemplates a novel prefabricated, integrally cast single plumbing drainage unit which eliminates a substantial part of the time and material required to provide a plumbing drainage system for a plurality of all plumbing fixtures.

It is therefore the primary object of this invention to design and provide a combination manifolded plumbing vent and waste drainage unit adapted for installation as a unit within a building wall to connect a plurality of plumbing fixtures with a soil line and to vent Said installation.

An object of this invention is to design and provide a combination manifolded vent and waste unit which is adapted to be quickly and easily installed within standard building wall construction (that is, a building wall employing 2 x 4 studs).

Another object of this invention is to design and provide an integrally cast, dual manifolded vent and waste plumbing unit of selected height having a plurality of adjacent parallel vertical passageways lying in the planar zone of a building wall, each passageway serving as a waste line and as a vent line.

A further object of this invention is to design and provide a combination vent, waste and soil unit which may be easily manufactured by casting, easily installed and occupies a minimum of space.

A still further object of this invention is to provide` a vent and waste plumbing unit comprising essentially only 2,719,308 Patented Oct. 4, 1955 ICC one integral casting having a manifolded vent system and a manifolded waste system within the casting.

The invention contemplates a plumbing unit as above described wherein a shouldered vent port is afforded for conveniently connecting the unit to a vent stack formed of composition material such as Transite.

Generally speaking, the plumbing unit of this invention contemplates a hollow, vertically elongated body portion of rectangular cross-section adapted to be installed in a building wall of standard thickness and to extend above the height of plumbing fixtures to be connected to said unit. A plurality of longitudinally extending partitions are integrally cast within the hollow body portion for providing a plurality of vent and waste drainage passageways. At the top of the body portion, manifold means are provided to connect the passageways to a common vent stack. At the bottom of the body portion a second manifold means are provided to connect all of the passageway/s to a common soil outlet.

Other objects and advantages of this invention will be readily apparent from the following description of the drawings in which an exemplary embodiment of this invention is shown:

ln the drawings:

Fig. l is a diagrammatic plan view of an arrangement of plumbing fixtures associated with a plumbing unit embodying this invention, the unit being installed within a building wall.

Fig. 2 is a front View (partly in section) of the plumbing unit shown in Fig. l.

Fig. 3 is a sectional view taken in the plane indicated by line 3 3 of Fig. 2.

In the diagrammatic illustration of Fig. l, an economical, etiicient plumbing arrangement or system is exemplarily Villustrated showing a water closet 10, a shower 11 and a lavatory 12 arranged on one side of a buiding wall 13 while on the other side of said wall may be provided a sink 14 and a laundry tray 15. Within the hollow building wall 13 and between the studs 16 is a combination dual manifolded plumbing unit embodying this invention, generally indicated at 17, the lower portion of said unit extending below the floor as shown in Fig. 2. The plumbing unit 17 is of such size that it may be readily accommodated between standard spaced 2 x 4 studs (that is, spaced 16 inches on centers) and at the same time is sufficiently .narrow in cross-section so that its outer transverse dimension is less than the thickness of the building wall 13.

The plumbing unit 17 may comprise a top cover casting 20 and a combination dual manifolded vent and waste casting 21. The casting 21 comprises a vertically disposed elongated rectangular hollow vent and waste stack or body portion 22 having spaced parallel side walls 23 and spaced parallel end walls 24. The body portion 22 is open at opposite ends. At the open bottom end, body portion 22 is integrally cast with a soil pipe portion 25 having an elongated, longitudinally extending opening 26 provided in the top wall thereof which communicates with the open bottom end of body portion 22. The soil pipe portion 25 may be of suitably selected diameter to provide the required capacity for waste and soil drainage and may be provided with an open bell end 27 which may receive, as indicated in diagrammatic lines, a lateral Y pipe section to provide a suitable accessible clean-out. If desired the soil pipe portion 25 may be integrally cast with an upwardly directed clean-out section to take the place of the lateral Y pipe section mentioned above.

It should be noted that the axis of the soil pipe portion 25 lies slightly out of 90 relationship with respect to the axis of the body portion 22 so that a proper drainage slope is afforded for the soil portion 25 when the body portion 22 is vertically positioned when installed.

The body portion 22 includes a plurality of integrally cast spaced parallel partitions 29 interconnecting the side walls and defining a plurality of passageways including a relatively large central passageway 30 and end passageways 31, 32, 33 and 34 of virtually equal cross-sectional area and smaller than passageway 30. The lower ends of the partitions 29 terminate at opening 26. The soil pipe portion 25 thus serves as a bottom manifold means for all of said pasageways which are in communication therewith through the opening 26.

At their upper ends, the partitions 29 terminate in spaced relationship from the top edges of the side and end walls 23 and 24 to form within the body portion 22 a top common vent chamber 35 atfording a vent manifold means.

The top cover casting 20 may be secured and carried on the top of the body portion 22 in suitable manner as by welding thereto and may be of any suitable reinforced casting design. The cover casting 20 is provided with a central elongated shouldered vent port 36 in communication with the manifolding vent chamber 35. The shoulders of the vent port 36 serve to support the bottom end of a vent stack 37 of rectangular cross-section of any suitable composition material such as Transite, said Vent stack 37 leading to the roof and to atmosphere. Upstanding peripheral walls 38 on the casting 20 hold and position the stack on the shoulders of the vent port.

Drain pipe from the several plumbing fixtures 10, 11, 12, 14 and 15 may be connected to the plumbing unit 17 in well-known manner. Below the floor of the building, as

shown in Fig. 2, the water closet may be connected by suitable pipe to a lateral bell-type shouldered socket 39 integrally cast with the soil portion 25. The lower edge large capacity for the water closet 10, the passageway 30 acting as a soil stack for the water closet 10 and joining the vent stack 37 so that the vent stack 37 acts as a combined vent and soil stack.

The drain pipe from the shower 11 may be suitably connected beneath the floor to passageway 31 above the soil pipe portion and below the flooring. A threaded nipple 40 may be provided in the end wall 24 for this connection.

Above the floor, the drain pipe from the lavatory sink and laundry tray may be connected at 41, 42 and 43 by suitable means to the respective passageways 34, 33 and 32, said connections lying between the iloor and the top edges of the partitions 29. It is important to note that the height of the body portion 22 should be at least 36 inches so that the portion thereof lying above the iioor extends to a suitable height so that the connections 41, 42 and 43 of the plumbing fixtures 12, 14 and 15 may be made between the ends of the respective passageways and with an adequate portion of each passageway lying above said respective connection to provide an adequate volume of air for venting said fixtures. It will be readily understood that the entire air volume lying above said connections is available for the venting of each of said fixtures so that adequate aspiration of air is aiforded. This arrangement also provides for a venting system in which clogging of a vent is positively prohibited.

The plumbing unit of this invention as described above thus provides a vent manifold and a drain manifold within a single integral casting which may be readily manufactured and is capable of convenient installation within a building wall. While a plumbing unit has been exemplarily shown having connections for tive plumbing fixtures, it will be readily understood that the number of vent and drain passageways may be increased as desired to provide a plumbing unit capable of serving more than iive plumbing fixtures.

It is understood that various modifications and changes may be made in the plumbing unit described above and all such modifications and changes coming within the scope of the appended claims are embraced thereby.

I claim: i

1. A prefabricated, unitary, plumbing drainagesystern for venting and drainage of waste from a plurality of plumbing fixtures including an elongated housing of substantially rectangular cross section throughout the greater portion of its length, said housing incorporating a plurality of parallel passages of substantially equal length the lower portion of each of which serves as a waste duct and the upper portion of each of which serves as a vent duct, said waste ducts communicating at their lower extremities with a common horizontally oriented waste manifold extending across the entire width of said housing, said vent ducts communicating at their upper extremities with a common horizontally oriented vent manifold extending across the entire width of said housing.

2. A prefabricated, unitary, plumbing drainage system for venting and drainage of waste from a plurality of plumbing fixtures including an elongated housing of substantially rectangular cross section throughout the greater portion of its length, said housing incorporating a plurality of parallel passages of substantially equal length the lower portion of each of which serves as a waste duct and the upper portion of each of which serves as a vent duct, said waste ducts communicating at their lower extremities with a common waste manifold extending horizontally across the width of said housing, said vent ducts communicating at their upper extremities with a common horizontally oriented vent manifold extending across the width of said housing, said passages all terminating the same distance below the top of said housing to define said vent manifold within said housing.

3. A prefabricated, unitary, plumbing drainage system for venting and drainage of waste from a plurality of plumbing fixtures including an elongated housing, said housing incorporating a plurality of parallel passages of substantially equal length the lower portion of each of which serves as a waste duct and the upper portion of each of which serves as a vent duct, said waste ducts communicating at their lower extremities with a common waste manifold, said vent ducts communicating at their upper extremities With a common vent manifold, said housing also incorporating a soil pipe vent passage having its upper and lower extremities coterminous with the ends of said passages and in communication respectively with said vent and waste manifolds.

4. A prefabricated, unitary, plumbing drainage systern for venting and drainage of Waste from a plurality of plumbing fixtures including an elongated housing, said housing incorporating a plurality of parallel passages of substantially equal length the lower portion of each of which serves as a waste duct and the upper portion of each of which serves as a vent duct, said waste ducts communicating at their lower extremities with a common waste manifold, said vent ducts communicating at their upper extremities with a common vent maifold, said housing also incorporating a soil pipe vent passage having its .upper and lower extremities coterminous with the ends of said passages and in communication respectively with said vent and waste manifolds, said vent manifold having a vent opening in communication with the ends of said waste and vent passages.

References Cited in the tile of this patent UNITED STATES PATENTS 368,645 Bolton Aug. 23, 1887 785,130 Vanderman Mar. 2l, 1905 92l,092 Donat May ll, 1909 959,207 Donat May 24, 1910 1,427,107 Kaplan Aug. 29, 1922 1,523,945 Fruin Jan. 20, 1925 2,340,323 Groeniger Feb. 1, 1944 2,653,357 Sanders et al Sept. 29, 1953 

